Combined fluid pump and motor.



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Patented Jan. 14,1919.

2 SHEETS-SHEET 2 UNITED sirArrEs Parnu carica..

GUSTAF OLSON, OF CHICAGO, ILLINOIS, ASSIGNOR F ONE-HALF TO WILLARD M.

Mouwen,

OF CHICAGO, ILLINOIS.

COMBINED FLUID PUMP AND MOTOR.

, To all 'whom'z't may concern:

tion is shown in the accompanying.

Be it known that I, GUs'rAF OLSON, a citizen of the United States ofAmerica, and a resident of Chicago, county of Cook, and State ofIllinois, have invented certain new and useful improvements in CombinedFluid Pumps and Motors, of which the following is a specification.

The main objects o1' this invention are to provide an improved devicecapable of being operatedto compress or pump ii'uidsor to be driven byiiuids to act as a motor; to. provide an improved construction andarrangement of the parts o1' said device; and to provide 'improvedvmeans for cooling and lubricating said device.

An illustrative embodiment of this invenings, in which:

Figure 1 is an end elevation of the device, the end plate being omittedand some of the parts being shown in section.

Fig. 2 is a transverse sectional elevation i of the device.

' casing 1, supp Fig. 3 is a sectional detail of the rotor.

Fig. 4 is a sectional detail of the rotor ring which coacts with thecasing to provide a seal for the suction and compression chamber, andwith 'the rotor to provide guideways for the vanes.

Fig. 5 is a face view of the same. Fig. 6 shows in detail one of thebearin members to which the vanes are connectec Fig. 7 shows in detailone of the vanes.

Fig. 8 is a sectional detail showing the formation of the fluid inletand outlet.

The device has been shown in the drawings as an air compressor or pumpand is hereinafter so described, but it will be understood-that it isequally suitable for use with other fluids as a compressor or pump, orthat it may be used `as a Huid loperated motor by an obvious reversal ofsome ofthe parts.

In the construction herein illustrated, a

orted on va standard 2, is provided ywith a posite formation of twoeccentrically arranged bores, the centers of which are designated 5 and7 respectively. The wallof the chamber therefore comprises two op.-posed arcuate parts 4 and 6.

The rotor comprises ,a disk-shaped member 8 having a hub portion 9 keyedto the shaft 10 and having an axially disposed Specification of LettersPatent. Patented Jan, 14:, Application filed September 11, 1916. SerialNo. 119,462. l

,formed in the casing draw l chamber 3 which 1s a com-V annular flange11. The shaft 10 is journaled in a bearing 12 formed on the casing 1with its axis coincident with the center 5, whereby the rotor is mountedso that the periphery of the flange 11 fits with the wall 4 and providesa space' 13 between the peripheryof said flange and the wall 6. ,x Aringshaped member 14 is secured to the flange 11 so as to overlap theinner and outer periphery thereof and I rovide a projecting iange whichis rotata ly supported in a circular recess 15. The recess 1 with itscenter coincident with the center 5 of the wall 4 provides a circularshoulder portion against which the projecting iange art of the ring 14lits. The ring 14 thus orms a closure for the space between the outerperiphery l of the flange 11 and the walls 4 and 6, and

coacts with the disk 8 and iange 11 to provide guideways for the vanes16.

A plurality rotor, being dially disposed slots 17 lformed in the disk 8and ange`11. These vanes are recipro cated in their respective slotsthrough the action of the guide member 18, so that they are urged intocontact with the annular wall 6. as they are moved by the rotor aroundthe lower part of the cham er 3 and are retracted as they are movedthrough the upper part of said chamber.

The guide member 1.8 is rotatably mounted on a shaft or pin 19 journaledin the casing cover 20, with its axis coincident wit the center 7thereby being eccentrically disposed with respect This arrangement of tbearin s 22 provides a rigid but shitable pivota support for the inner'ends of the vanes 16 and allows for their swinging movement relative tothe guide member 18 as they are rotated around thechamber 3.

Inlet and outlet ports 29 and 30 are formed in opposite sides of thecasing 1, so as to communicate with respectively opposite ends of thespace 13. Y

In-the construction kherein shown,ithe'se of vanes 16 are carried by thei shiftably mounted in the ra- 15, which is tion of heat created by theoperation of the device.

The construction andv arrangement of the rotor, the guide member 18 andcover 20 as herein illustrated provide an annular corn partment 31between lall of the parts inwardly of the inner periphery of the flange11. rll`his space is adapted to contain a quantity of oil which servesthe double function of providing a lubricant for all the moving parts ofthe device and keeping them cool.

The operation `of the device herein shown is as follows:

rlFhe shaft 10 is to be driven by a suitable source ofvpower which maybe connected to the usual shaft coupling 32. For following out theoperation of the device, .it will be assumed that the rotation is in thedirection of the arrow 33.

The rotation of the rotor and the guide member 18 about their eccentriccenters 5 and 7 causes the vanes 16 to reciprocate so that as the vanesapproach the right hand end of the space 13 (Fig. 1), they are caused tomove out into contact with the annular wall 6, and recede as theyapproach the left hand end of said space.l As each of the vanes passsthe annular opening 29, a vacuum-is created rearwardly thereof which isiilledY with air admitted through said inlet 29. As each of the vanesapproaches the outlet 30,

the ail in advance of each of said vanes is compressed' and dischargedthrough said outlet 30, as will be obvious.

Although but one speciic embodiment of this invention has been hereinshown and described, it will be understood that numerous details of theconstruction shown may be altered or omitted without departing from thespirit of this invention as defined by the following claims.

I claim:

1. lin a device of the class described, the combination-ofa casinghaving a chamber therein, a rotor comprising a disk-shaped memberjournaled in said casing and having an axially disposed annular idangeitting with a part of the wall of said chamber and providing a spacebetweenthe outer periph-A ery ci' said iange and the remaining part ofthe 'vv-all of Harige having formed therein, vanes shiftably mounted insaid recesses, a ring secured to said Hangs said chamber, said diska'nduradially disposed recesses fand adapted as to cause ripetere andoverlappin ripheries thereo and coacting with said casingl to form aclosure for the space betweensaid dange and the wall of said chamber,

l and -a guide member arran ed-to cause said vanes lto bear against sai`remaining 'art of the wall of said chamber during t eir movementthrough said space.

the inner andV outer pe` '2. In a device of the class described, the

combination of a casing having a chamber therein, a rotor comprising adisk-shaped member j ournaled in said casino and having an axiallydisposed annular providing a space lbetween the outer eriphery of saidiange andthe remaining part of the wall of said chamber, said diskv andflange having radially disposed recesses 'formed therein, vanesshiftably mounted in 4tached ,to said casin and forming a closurel forthe entire cham er. v v

' 3. lin `a device of the class described, the combination of a casinghaving a chamber formed therein, a rotor journaled ina bearing formed onone side of said casing and having the .periphery thereof tting with aportion of the wall of said chamber and providing a space between saidperiphe and the remainin said chamber, a p urality of radially movablevanes mounted on said rotor, a guide member rotatably mounted in abearing formed on the oppositeI side of said casing eccentrically .ofsaid rotor bearings, said member having anannular groove formed in theJface opposed to said rotor, n ers formed on said vanes-and extendinginto said groove, and bearings pivotally .connected to said ngers andshiittably mounted in said groove.

t. In a device oi the class described, the' portion of the wall of'Aange e fitting v with a part ofthe Wallcf said chamber and of saidchamico "ietfA iwl iis

an annular transversely disposed flan e yfitting with a (part of thewall of said cha ber and provi i ng a space between the outer lperiphery of .said flange and remaining part of the wall of saidchamber, said diskand I tlange vhaving radially disposed recesses formedtherein, vanes shiftably mounted in said vrecesses, and, a guide member`arranged ,in said-casing eccentrically of said rotor to be engaged bysaid vanes so them to bear against said other annular vwall during therotation of said y rotor, the opposed faces of said guide member androtor being spaced apart axially so as to rovlde a compartment between tem including the space between the outer and i inner periphery thereofwhereby to form a sealed chamber between said rotor and member toaccommodate va 'quantity of lubricating and cooling fluid.

5. In a device of the class described, the combination with a casinghaving an oval recess with a circular shoulder portion concentric withthe center of one end of the oval, la circular member mounted for.rotation about this end of the oval having a iiange seated in the saidshouldered portion and with radial slots, vanes movable in the slots,and a guide member for ositively engaging the vanes for moving t em intoand out o that ortion of the oval recess not covered by t e saidcircular member.

6 In a device of the class described, the combination with a casinghaving an opening for a shaft, an oval recess, of which one opening,

end is concentric with the shaft opening, a shouldered portion at theouter side of the recess which is also concentric with a shaft arecessed rotary member with radial slots fitting the recess and with aiange fitting the shouldered portion of the casing, a shaft mounted inthe shaft openand secured to the said member, vanes slidable in theslots, a cover plate to fit over the recess having a projecting pinconcentric with the other center of the oval, there being a spacebetween the said rotary member and the recess at this end thereof,passages at the ends of the recess and a ide member freely mounted onthe said pin in the recess of the rotary member having an annular recessfor engaging the vanes to move them positively in both directions intoand out of the said space when the rotary member is rotated. i

Signed at Chicago this 9th day of lSeptember, 1916.

GUSTAF OLSON.

